Automatic valve-gear.



C. A. JOY.

AUTOMATIC VALVE GEAR.

APPLICATION FILED DEC-12,1914.

1,155,245. Patented Sept. 28, 1915.

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wi/bumoea COLUMBIA PLANOGRAPH CO.,WASHIN uuuuuuuu e C. A. JOY.

AUTOMATIC VALVE GEAR.

APPLICATION FILED DEC. 12. I914.

1,155,245. Patent-edsept. 28, 1915.

2 SHEETSSHEET 2.

COLUMBIA PLANOORAPH c0.,wA5H1NuToN,n. c.

CHARLES A. JOY, 0F I ARK, WASHINGTON.

- AUTOMATIC VALVE-GEAR.

Specification of Letters Patent.

Application filed December 12, 1914. Serial No. 876,874.

To all whom it may concern: i i

, Be it known that I, CHARLES A. JOY, a citizen of the United States,residing at Park, in the county of Whatconiand State of lVa-shington,have invented new and use ful Improvements in Automatic Valve- Gears, ofwhich the following is a specification. f

This invention relates to engine governors or automatic valve, gear forregulating the speed of an engine and enabling'the same to be run atuniform speed irrespective of the load thereon.

The object of the present invention is to provide a simple, practicaland reliable governor of the class referred to which will do away withthe usual eccentric, cam, straps and many other parts now used indevicesof the kind, at the same time reducing the amount of friction due to thelessening of the wearing parts also doing away with the governor wheeland at the same time economizing floor space and [providing for a changein the lead of thevalve.

A further object "of the invention isto so construct the governor thatthe working parts thereof are exposed and accessible for adjustmentWithout anyv extra work on the part of the engineer, thus"insuringbetter attention to the governor on the part of the engineer. g j l xl/Vith the above and otherobjects in view, the invention consistsin thenovel construction, combination and arrangement of parts, as hereindescribed, illustrated and claimed.

In the accompanying drawings F igure 1 is an elevation of the governorof this invention showing the parts in a position of rest. Fig. Q'is asimilar viewflshowing the position assumed by the parts while in1n0-ti'on or operation, Fig. 3 is asimilar View showing thesame" principleapplied to a governor for the ball or piston type valve. Fig. 4: is adiametrical section taken in line with the wrist pin ofthe crank wheel.Fig.

5 is a fragmentary elevation showing the adjustable bearing for one ofthegovernor levers. Fig. 6 is a detail cross section through the yoke orlink showing the means for changing thelead of the valve.

Referring to the drawings 1 designates the crank wheel or disk' of anengine and 2 the connecting rod which "has one end thereof journaled onthe crank or wrist pin 3. In carrying out. the present invention I mountthe entire governor mechanism on ignated generally at the crank pin 3.The governor mechanism embodies a supporting frame or hanger des- A,said hanger comprising three arms 4, 5 and 6. The arm 1 is the one whichconnects directly to the wrist pin 3 and as the hanger 4 must bear afixed relation to the wheel 1, the arm 4: is provided with a squared andtapered opening 7 which fits tightly upon a correspondingly squared andtapered portion 8 of the pin 3 as illus trated in Fig. 1, the hangerbeing retained and firmly clamped, in positionby means of anut, 9through which is inserted a 'pin' or lever 11. said lever being mountedat one extremity on a fulcrum pin 12., An oppositely located governorlever 13 is fulcrumed at ltbetween its ends on the shorter arm 5 of thehangenthelast named lever comprising a long arm to which the referencenumeral 13is applied and a short arm 15 to the extremity of which ispivotally connected at a link or yoke 17 pivotally connected at itsoppositeextremity at 18 to the governo r lever'll at a pointbetweenitsfulcrum 12 and its free end. Eachlever is provided at its freeend with a weight 19.

20 designates a speed controlling spring shown as of the coiledcontractile type, the opposite extremities of said spring being at-Patented sept. 28, 1915.

cached to'eye bolts 21 inserted through the governor levers andadjustable by means of nuts and am nuts 22 by means of which the tensionof the spring 20 may be increased or diminished to correspondinglyregulate the speed of the engine. The spring 20, it will, .be noted, isconnected at one end to the one armed lever andat its opposite end tothe longer arm of the two-armed governor'lever.

In order to provide for adjusting the lead of the valve, the link 17 isprovided with an obliquelyextending slot 23 in which is an" ad ustableblock 24 which carries an eccentric pin 25 to which the valve rod orstem is connected. Bearing against opposite ends of the block 24 areadjusting screws 25 which are threaded through the opposite walls of thelink 17 and held when adjusted by means of lock nuts 26. The pins 16 and18 are received in adjustable bearings one v of which is illustrated inFig. 5, each bearample, the lever 11.

proper actuation thereto the necessary lead 1n accordance ing beingmounted in a slot 27 in one end of the link 17 and comprising relativelymovable sections 28 one of which is adjustable toward the other to takeup wear by means of a screw 29 held when adjusted by means .of a locknut 30.

31 designatesa dashpot the cylinder of which is pivotally mounted at 32in an extension 33 of one of the hanger arms, the

'rod 34 of the piston in the dash pot being connected to a laterallyextending arm 35 on one of the governor levers as, for exhereiuabovedescribed is The governor designed for use in connection with theordinary slide valve of a steam engine. Where the governor is to be usedin connection with the'well known ball or piston type valve, the hangerdesignated generally at B in Fig.

'3is made ofa different size and proportion, the inwardly extendmgarms-thereof being comparativelyshort so as to provide for the of thevalve and give with'the requirement of the enginein connectlon withwhich the governor 1s used.

The governor illustrated in Fig. 3 is also equipped with the same meansfor changing the lead of the valve and in both types of governors," thelink is also, by preference, provided with a hole 36 to receive theeccentric pin where a fixed valve lead is sufiicient.

I The governor hereinabove described enables floor space to be conservedfor the reason that the fly wheel may be run close up to the cylinder ofthe engine as there'is "no valvev gear or steam chest on that side tointerfere.

The lead of the valve may be found at any moment when the engine is atrest without examining the valve itself. Furthermore, the governor maybeconnected direct to the valve without the use of any intermediaterockers or levers'of any sort.

Centrifugal force acting on the governor 45 moveoutwardly and in sodoing they force levers'causes the weighted ends thereof to theeccentric pin nearer to the center of the crankshaft thusshortening thevalve travel and. causing the engine to slow down; as

soon as the engine begins to slow down, however,.thecentr1fugal force isreduced and the spring then acts to draw the governor levers inwardly,one force acting against the other, the result being that the engine. ismaintained at uniform speed. a

It is necessary that the weights l9 be in exact line, with each otheracross the center of the crank wheel at all times and in all positions.In order to do this, oneof the lever supporting hanger arms is madeshorter than the other. The shorter the ra- I dius, the less thecentrifugal action thereon and. therefore is necessaryto shorten theleverage or radlus in orderv to give the weight 19 more travel for thepurpose of keeping the weights exactly opposite each other or across andin-line with the center of the crank shaft.

" Inusing the governor upon a valve of the ball orpiston type it isnecessary to reverse the valve travel while the engine is still runningin the same direction as the common valve. The dash pot piston may befastened to its center so that it may oscillate sufficiently to permitthe levers to travel inwardly and outwardly.

' to the end of one of the governor levers and the cylinder is pivotallymounted adjacent In order to hold the valve wide open when the engine isat rest, one or more stop pins 37 are provided against which the leversrest when moved fully inward, thus enabling the engine to be easilystarted.

What I claim is V 1. In governor mechanlsm for englnes, the

combination with the crank wheel and 'th'e wrist pin thereof, of ahanger supported wholly on said wrist pin, bearing a fixed relation tosaid crank wheel and having arms extending to opposite sides of the axisof said wheel, weighted governor leversfulcrumed on said hanger arm'sone of said levers embodying. a long arm and a short arm, a valvethrowing link connecting one of said levers with the short arm of theother lever, and a speed controlling spring connecting both levers.

v 2. In governor mechanism for engines, the combination with the crankwheeland the wrist pin. thereof, of a hanger supported wholly. on saidwrist/pin, bearing a fixed relation to said crank wheel and having armsof unequal length extending toopposite sides of the axis of said wheel,weighted" governor.

levers fulcrumed on said hanger arms one of said levers embodying a longarm and a short arm, av valve throwing llnk connecting oneof said leverswith the short arm .ofthe other lever, and a 'speed'controlling springconnecting both levers.

3. In governor mechanism for engines, the combination with the crankwheel and the of said levers with the short arm of the,

other lever, means on said link for adjusting the lead of the valves,and a speedcontrolling spring connecting both levers.

4. In governor mechanism for'engines, the combination with the-crankwheel and the wrist pin thereof, of a hanger supported wholly on saidwrist pin, bearinga. fixed relation to said crankwheel and having armsextending to opposite sides of the axis of wrist pin: thereof, of ahanger supported said wheel, weighted governor levers fulcrumed on saidhanger arms one of said levers embodying a long arm and a short arm, avalve throwing link connecting one of said levers with the short arm ofthe other lever, a speed controlling spring connecting both levers, andmeans for adjusting the tension of said spring to regulate the speed ofthe engine.

5. In governor mechanism for engines, the combination with the crankwheel and the Wrist pin thereof, of a hanger supported wholly on saidwrist pin bearing a fixed relation to said crank Wheel and having armsextending to opposite sides of the axis of arm, a valve throwing linkconnecting one of said levers with the short arm of the other lever, aspeed controlling spring connecting both levers, and a stop device tohold said governor levers in position to hold the valve open when theengine is at rest.

In testimony whereof I aflix my signature in presence of two Witnesses.v

CHARLES A. JOY. Witnesses:

W. H. CAMPBELL, Gno. B. DENT.

Copies of this patent may be obtained for five-cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

